Most scientific python packages broken

Question

After the update to 2.6, packages such as numpy, scipy, matplotlib, etc are not working anymore. I get the following error in ipython when trying to import any one of them.
In [1]: import numpy
ImportError Traceback (most recent call last)
/home/msid/<ipython console> in <module>()
/usr/lib/python2.5/site-packages/numpy/__init__.py in <module>()
123 return loader(*packages, **options)
124
--> 125 import add_newdocs
126 __all__ = ['add_newdocs']
127
/usr/lib/python2.5/site-packages/numpy/add_newdocs.py in <module>()
7 # core/fromnumeric.py, core/defmatrix.py up-to-date.
8
----> 9 from lib import add_newdoc
10
11 add_newdoc('numpy.core', 'dtype',
/usr/lib/python2.5/site-packages/numpy/lib/__init__.py in <module>()
2 from numpy.version import version as __version__
3
----> 4 from type_check import *
5 from index_tricks import *
6 from function_base import *
/usr/lib/python2.5/site-packages/numpy/lib/type_check.py in <module>()
6 'common_type']
7
----> 8 import numpy.core.numeric as _nx
9 from numpy.core.numeric import asarray, asanyarray, array, isnan, \
10 obj2sctype, zeros
/usr/lib/python2.5/site-packages/numpy/core/__init__.py in <module>()
3 from numpy.version import version as __version__
4
----> 5 import multiarray
6 import umath
7 import _internal # for freeze programs
ImportError: libpython2.5.so.1.0: cannot open shared object file: No such file or directory
I even tried reinstalling them, but the packages always install in the python2.5 directory . Is a recompilation needed in the repositories?

Answer 1

Profjim wrote:
What do you mean, make it use python2.5? It only gets loaded by an already-running Python interpreter, there's no way that numpy can change the version of the interpreter that's loading it.
What you can control is: (1) keep a copy of python2.5 on your machine, and (2) install numpy in the /usr/lib/python2.5/site-packages folder. (2) is easy: just tweak the numpy PKGBUILD to make sure that the python interpreter that's doing the install is itself 2.5. (1) is of course doable but I think will be more work---that is, if you also want to upgrade to python2.6. You're going to have to rewrite the python PKGBUILDs to enable you to have different versions side-by-side. Or, you could just let pacman upgrade to python2.6, and install python2.5 from source in /usr/local/bin (without using pacman).
When someone has gotten (debugged) PKGBUILD tweaks that install different versions of Python beside each other, please share the love.
Numpy is already installed in python2.5/site-packages, but when I try to import it in ipython, I get the error
ImportError: libpython2.5.so.1.0: cannot open shared object file: No such file or directory
And since there is no python2.5 in the repos, only 2.4, I guess I will have to install that.
Last edited by sidc (2008-11-04 08:01:48)